It turns out that the national economy is relatively tight, and cost saving should be considered from design to construction. Therefore, most of the buildings at that stage were brick-concrete structures, precast slabs and ready-made building cement, and most of them were packaging cement.

Since the 1990s, the cast-in-place frame structure has been used, and the consumption of cement has soared, so the packaging cement can't keep up, and bulk cement is used on site. In order to encourage production enterprises to keep up with the popularization of bulk cement, special funds were collected.

In fact, this kind of charge should have been cancelled a long time ago.